Stuttering and leaving blobs during printing.

iMac Core i7 OSX, Delta with Marlin firmware (also tried latest 1.1 RC7 marling firmware). Also v1.5 had this problem. I hoped that with 1.6 the problem would be fixed. I want to use mattercontrol because of it's features but printing over USB is terrible.

Always stopping and giving blobs in the print.

The cause: Mattercontrol is (like other apps) reading the temps of the bed and nozzle during printing. Every time the temps are read the printer stops for 0.5 seconds leaving a blob on my print.

Exporting from Mattercontrol and printing the gcode using pronterface or any other 3d printing app (which also read the temps) results in a perfect print. Somehow the serial communication from Mattercontrol on a Mac is slow (MONO layer).

I dont like Cura but it does the job without blobs.

THIS IS THE ONLY 3D PRINTING APPLICATION WITH THIS PROBLEM!, i tried all others (cura, pronterface, repetier etc.) without this problem

Thanks for your feedback. We're aware of scattered problems with Mac builds of MatterControl, and while they are not ideal they seem to affect only a very small percentage of users.

Please also keep in mind that MatterControl is free and open source. With unlimited resources we would have a much easier time fixing every bug found, but our team is small and unfortunately our resources are limited. When we take on a new feature or area of development we do so with the hope that it will benefit the 3D printing community at large, and weigh the pros and cons against those of other possibilities.

In this case development for fixing this issue is pretty low priority. If you are interested in sponsoring some development we might be more willing; in that case please contact us via email at support@matterhackers.com.